:root {
  color-scheme: light;
  --ink: #1d2522;
  --muted: #607069;
  --line: #d9dfd7;
  --paper: #fbfbf7;
  --panel: #ffffff;
  --green: #1f6f5b;
  --red: #a33d30;
  --gold: #b7812f;
  --blue: #2e5f8d;
  --shadow: 0 18px 48px rgba(22, 32, 29, 0.12);
  --fs-xs: clamp(12px, 0.35vw + 10.8px, 13px);
  --fs-sm: clamp(13px, 0.45vw + 11.2px, 15px);
  --fs-base: clamp(16px, 0.45vw + 14.2px, 18px);
  --fs-md: clamp(17px, 0.55vw + 14.8px, 20px);
  --fs-lg: clamp(19px, 0.9vw + 15.4px, 24px);
  --fs-xl: clamp(24px, 1.6vw + 17.6px, 34px);
  --fs-page: clamp(31px, 3.2vw + 18.2px, 52px);
  --fs-hero: clamp(36px, 4.6vw + 17.6px, 64px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: var(--fs-base);
  line-height: 1.65;
}

a {
  color: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 71px;
  gap: 24px;
  padding: 16px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid rgba(217, 223, 215, 0.86);
  background: rgba(251, 251, 247, 0.62);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 auto;
  min-width: 0;
  color: var(--ink);
  text-decoration: none;
}

.brand > span {
  min-width: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid #cbd8ce;
  border-radius: 50%;
  background: #fff;
  color: var(--green);
  font-weight: 900;
  font-size: 16px;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.2;
}

.brand strong {
  font-size: 17px;
  font-weight: 800;
}

.brand small {
  margin-top: 3px;
  max-width: min(48vw, 520px);
  color: var(--muted);
  font-size: 12px;
  white-space: normal;
}

.topbar h1,
.section-head h2,
.output-top h2 {
  margin: 0;
  letter-spacing: 0;
}

.topbar h1 {
  font-size: var(--fs-lg);
  line-height: 1.25;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--green);
  font-size: var(--fs-sm);
  font-weight: 700;
}

.topnav {
  display: flex;
  gap: 8px;
  flex: 0 0 auto;
}

.topnav a {
  color: var(--ink);
  min-height: 38px;
  padding: 8px 12px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 14px;
  line-height: 1.55;
}

.topnav a:hover {
  background: #edf3ee;
}

.topnav a.active {
  background: #e4efe8;
  color: #134c3c;
  font-weight: 800;
}

main {
  padding-bottom: 56px;
}

.home-main,
.content-main,
.cast-main,
.result-main {
  padding: clamp(22px, 5vw, 64px) clamp(18px, 6vw, 80px) 64px;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(320px, 1fr);
  gap: clamp(26px, 6vw, 76px);
  align-items: center;
  min-height: min(680px, calc(100vh - 100px));
}

.compact-art {
  min-height: 340px;
}

.home-hero .hero-copy h1 {
  max-width: 740px;
  margin: 0 0 18px;
  font-size: var(--fs-hero);
  line-height: 1.1;
}

.home-actions,
.lesson-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 9px 18px;
  border-radius: 6px;
  border: 1px solid var(--green);
  text-decoration: none;
  font-weight: 800;
}

.primary-link {
  background: var(--green);
  color: #fff;
}

.secondary-link {
  background: #fff;
  color: var(--ink);
  border-color: #c9d4cd;
}

.home-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 12px;
}

.entry-card {
  display: grid;
  gap: 8px;
  min-height: 172px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(22, 32, 29, 0.06);
}

.entry-card span {
  color: var(--green);
  font-weight: 900;
}

.entry-card b {
  font-size: var(--fs-lg);
}

.entry-card p {
  margin: 0;
  color: var(--muted);
}

.page-title {
  max-width: 860px;
  margin-bottom: 34px;
}

.page-title h1,
.section-head h1,
.lesson-article h1 {
  margin: 0 0 12px;
  font-size: var(--fs-page);
  line-height: 1.15;
}

.page-title p,
.section-head p,
.lesson-lead {
  color: var(--muted);
}

.study-timeline {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 34px;
}

.course-map,
.course-visuals {
  display: grid;
  gap: 14px;
  margin-bottom: 34px;
}

.course-map {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.course-map article,
.visual-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(22, 32, 29, 0.05);
}

.course-map article {
  padding: 18px;
}

.course-map span {
  display: inline-grid;
  place-items: center;
  min-width: 36px;
  height: 28px;
  margin-bottom: 12px;
  border-radius: 999px;
  background: #e9f2ec;
  color: var(--green);
  font-size: var(--fs-xs);
  font-weight: 900;
}

.course-map b {
  display: block;
  margin-bottom: 6px;
  font-size: var(--fs-md);
}

.course-map p {
  margin: 0;
  color: var(--muted);
  font-size: var(--fs-sm);
}

.course-visuals {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.visual-card {
  padding: 20px;
}

.visual-card h2 {
  margin: 0 0 14px;
  font-size: var(--fs-lg);
}

.yao-symbol-grid,
.coin-compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.yao-symbol-grid div,
.coin-compare-grid article {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdf9;
}

.yao-symbol-grid i,
.yao-line {
  display: block;
  width: 76px;
  height: 10px;
  margin-bottom: 10px;
  border-radius: 2px;
  background: var(--ink);
}

.yao-symbol-grid i.yin-line,
.yao-line.yin-line {
  background: linear-gradient(90deg, var(--ink) 0 38%, transparent 38% 62%, var(--ink) 62% 100%);
}

.yao-symbol-grid i.moving,
.yao-line.moving-line {
  outline: 2px solid rgba(163, 61, 48, 0.24);
  outline-offset: 4px;
}

.coin-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.coin {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(183, 129, 47, 0.48);
  border-radius: 50%;
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 16px;
  font-weight: 900;
  line-height: 1;
}

.coin.face {
  background: #f7e7b8;
  color: #7b4f16;
}

.coin.back {
  background: #2f564b;
  color: #fff9eb;
}

.coin-compare-grid .yao-line {
  margin-top: 2px;
  margin-bottom: 12px;
}

.coin-compare-grid b {
  font-size: var(--fs-md);
}

.yao-symbol-grid b,
.yao-symbol-grid span,
.coin-compare-grid b,
.coin-compare-grid span {
  display: block;
}

.yao-symbol-grid span,
.coin-compare-grid span {
  color: var(--muted);
  font-size: var(--fs-sm);
}

.coin-compare-grid .coin {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: inherit;
  font-size: 16px;
  line-height: 1;
}

.plate-visual {
  display: grid;
  gap: 8px;
}

.plate-visual > div {
  display: grid;
  grid-template-columns: 52px repeat(3, minmax(0, 1fr)) 36px;
  gap: 8px;
  align-items: center;
}

.plate-visual span,
.plate-visual b,
.plate-visual em {
  min-width: 0;
  padding: 8px 9px;
  border-radius: 6px;
  background: #f3f7f2;
  font-size: var(--fs-sm);
  font-style: normal;
  text-align: center;
}

.plate-visual span {
  color: var(--muted);
}

.plate-visual em {
  min-height: 38px;
  background: #f8eee9;
  color: var(--red);
  font-weight: 900;
}

.plate-summary {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.plate-summary article {
  position: relative;
  min-width: 0;
  padding: 14px 14px 14px 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(251, 253, 249, 0.92));
}

.plate-summary article span {
  position: absolute;
  top: 14px;
  left: 14px;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  padding: 0;
  border-radius: 50%;
  background: #e9f2ec;
  color: var(--green);
  font-size: 11px;
  font-weight: 900;
}

.plate-summary article b {
  display: block;
  padding: 0;
  background: transparent;
  text-align: left;
  font-size: var(--fs-md);
}

.plate-summary article p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: var(--fs-sm);
  line-height: 1.65;
}

.plate-summary .plate-note {
  display: block;
  grid-column: 1 / -1;
  padding: 14px 16px;
  border: 1px solid rgba(31, 111, 91, 0.2);
  border-left: 4px solid var(--green);
  border-radius: 8px;
  background: #f3f7f2;
}

.plate-note strong,
.plate-note p {
  margin: 0;
}

.plate-note strong {
  color: var(--green);
  font-size: var(--fs-sm);
}

.plate-note p {
  margin-top: 4px;
  color: var(--ink);
  font-size: var(--fs-sm);
  line-height: 1.65;
}

.image-reference-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 14px;
  margin-bottom: 34px;
}

.image-reference-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(22, 32, 29, 0.05);
}

.image-reference-card.wide {
  grid-column: span 1;
}

.image-reference-card h2 {
  margin: 0 0 14px;
  font-size: var(--fs-lg);
}

.image-reference-card img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfbf7;
}

.diagram-image-frame {
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: clamp(8px, 2vw, 16px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfbf7;
}

.diagram-image-frame img {
  border: 0;
  border-radius: 0;
}

.diagram-blend-image {
  width: min(100%, 720px);
  height: auto;
  max-height: min(72vh, 620px);
  object-fit: contain;
  mix-blend-mode: multiply;
  transform: scale(1.1);
}

.scroll-image {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfbf7;
}

.scroll-image img {
  width: max(760px, 100%);
  max-width: none;
  border: 0;
  border-radius: 0;
}

.study-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: start;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(22, 32, 29, 0.05);
}

.study-step span {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #e9f2ec;
  color: var(--green);
  font-weight: 900;
}

.study-step b {
  font-size: var(--fs-md);
}

.study-step p {
  margin: 6px 0 0;
  color: var(--muted);
}

.reference-panel {
  margin-top: 20px;
}

.reference-panel h2 {
  margin: 0 0 14px;
}

.lesson-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 820px);
  gap: 28px;
  align-items: start;
}

.lesson-nav {
  position: sticky;
  top: 92px;
  display: grid;
  gap: 6px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.lesson-nav a {
  padding: 9px 10px;
  border-radius: 6px;
  color: var(--ink);
  text-decoration: none;
  font-size: var(--fs-sm);
}

.lesson-nav a:hover {
  background: #edf3ee;
}

.lesson-article {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(22, 32, 29, 0.06);
}

.lesson-article section {
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.lesson-article h2 {
  margin: 0 0 8px;
  font-size: var(--fs-lg);
}

.lesson-article p {
  margin: 0;
  color: var(--muted);
}

.lesson-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0 6px;
}

.lesson-gallery figure {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdf9;
}

.lesson-gallery img {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  background: #fff;
}

.lesson-gallery figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--fs-sm);
}

.cast-main {
  display: grid;
  place-items: start center;
}

.cast-panel {
  width: min(100%, 940px);
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.cast-form {
  display: grid;
  gap: 10px;
}

.form-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 0.8fr);
  gap: 14px;
}

.yao-input-block {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr);
  gap: 18px;
  align-items: start;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.yao-input-block h2 {
  margin: 0 0 8px;
  font-size: var(--fs-lg);
}

.yao-input-block p {
  margin: 0;
  color: var(--muted);
}

.result-main {
  display: grid;
  place-items: start center;
}

.result-panel {
  width: min(100%, 1080px);
}

.plate-card {
  margin-top: 22px;
  position: relative;
  overflow: hidden;
  background: #fff;
}

.plate-scale {
  width: 840px;
  transform-origin: top left;
  border: 1px solid #d8d8d8;
  background: #fff;
}

.plate-meta {
  display: grid;
  grid-template-columns: 98px 1fr;
  border-top: 1px solid #e1e1e1;
  border-left: 1px solid #e1e1e1;
}

.plate-meta > div {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-right: 1px solid #e1e1e1;
  border-bottom: 1px solid #e1e1e1;
  font-size: var(--fs-md);
}

.plate-label {
  color: #bfa466;
  background: #fbfbfa;
  font-size: var(--fs-lg);
  letter-spacing: 0;
}

.ganzhi-stack {
  display: flex !important;
  flex-direction: column;
  width: 100%;
  height: 100%;
  align-items: stretch;
  padding: 0 !important;
}

.ganzhi-head,
.ganzhi-row {
  display: flex;
  width: 100%;
}

.ganzhi-head span {
  flex: 1 1 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid #e1e1e1;
  border-bottom: 1px solid #e1e1e1;
  color: #bfa466;
  font-size: var(--fs-sm);
  font-weight: 800;
}

.ganzhi-head span:last-child,
.ganzhi-row b:last-child {
  flex-grow: 1.08;
}

.ganzhi-row b {
  flex: 1 1 0;
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid #e1e1e1;
  font-size: var(--fs-lg);
  letter-spacing: 0;
  white-space: nowrap;
}

.ganzhi-row b:last-child {
  border-right: 0;
}

.ganzhi-row .accent {
  color: #cf2525;
}

.ganzhi-row .empty {
  color: #9a9a9a;
}

.plate-body {
  padding: 36px 12px 30px;
  text-align: center;
}

.plate-body h2 {
  margin: 0 0 26px;
  font-size: var(--fs-lg);
  letter-spacing: 0;
}

.plate-hex-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.plate-hex-grid.has-change-arrows {
  grid-template-columns: minmax(0, 1fr) 48px minmax(0, 1fr);
  gap: 8px;
}

.plate-arrow-col h2,
.plate-arrow-col .plate-footer {
  visibility: hidden;
}

.change-arrow-lines {
  justify-items: center;
}

.change-arrow {
  display: flex;
  width: 42px;
  min-height: 24px;
  align-items: center;
  justify-content: center;
  color: transparent;
  font-size: 24px;
  font-weight: 900;
  line-height: 1;
}

.change-arrow.is-active {
  color: var(--red);
}

.liuyao-lines {
  display: grid;
  gap: 22px;
  width: 100%;
  margin: 0 auto;
}

.plate-line {
  display: grid;
  grid-template-columns: 24px 42px 56px 26px 102px 22px;
  align-items: center;
  justify-content: start;
  gap: 5px;
  font-size: var(--fs-base);
  font-weight: 800;
}

.plate-line > span {
  line-height: 1;
  white-space: nowrap;
}

.plate-line .relation,
.plate-line .branch,
.plate-line .marker,
.plate-line .role {
  text-align: left;
}

.plate-line .spirit {
  color: #b71920;
}

.plate-line .branch,
.plate-line .role {
  color: #8d8d8d;
}

.plate-line .marker {
  min-height: 24px;
  color: var(--red);
  font-size: var(--fs-sm);
}

.line-shape {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 18px;
}

.line-shape.solid,
.line-shape.broken i {
  background: #2d2d2d;
}

.line-shape.solid {
  width: 96px;
}

.line-shape.broken {
  gap: 12px;
}

.line-shape.broken i {
  width: 42px;
  height: 18px;
  display: block;
}

.plate-footer {
  margin: 30px 0 0;
  color: #278235;
  font-size: var(--fs-lg);
  font-weight: 900;
}

.solving-state {
  display: grid;
  place-items: center;
  gap: 10px;
  min-height: 220px;
  text-align: center;
}

.solving-state h3 {
  margin: 0;
  font-size: var(--fs-lg);
}

.solving-state p {
  margin: 0;
  color: var(--muted);
}

.solving-spinner {
  width: 34px;
  height: 34px;
  border: 3px solid #dce5df;
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.hero {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(24px, 6vw, 72px);
  align-items: center;
  min-height: min(720px, calc(100vh - 72px));
  padding: clamp(28px, 6vw, 72px) clamp(18px, 6vw, 80px) 36px;
  border-bottom: 1px solid var(--line);
}

.hero-art {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
}

.bagua-image {
  display: block;
  width: min(72vw, 460px);
  aspect-ratio: 1;
  object-fit: contain;
}

.mini-hex i {
  display: block;
  height: 12px;
  border-radius: 2px;
  background: var(--ink);
}

.mini-hex i.broken {
  background: linear-gradient(90deg, var(--ink) 0 42%, transparent 42% 58%, var(--ink) 58% 100%);
}

.hero-copy h2 {
  max-width: 760px;
  margin: 0 0 18px;
  font-size: var(--fs-hero);
  line-height: 1.12;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: var(--fs-md);
}

.section-band,
.workspace {
  padding: 48px clamp(18px, 6vw, 80px);
}

.section-head {
  margin-bottom: 22px;
}

.section-head h2 {
  font-size: var(--fs-xl);
}

.compact {
  margin-bottom: 18px;
}

.learning-grid,
.reference-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.lesson-card,
.reference-grid article,
.panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 8px 24px rgba(22, 32, 29, 0.06);
}

.lesson-card {
  padding: 18px;
  min-height: 172px;
}

.lesson-card b {
  display: block;
  margin-bottom: 8px;
  font-size: var(--fs-md);
}

.lesson-card p,
.reference-grid p {
  margin: 0;
  color: var(--muted);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(330px, 440px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.panel {
  padding: 22px;
}

.input-panel {
  position: sticky;
  top: 96px;
}

.field {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
}

.field span,
.yao-label,
.input-tip {
  color: #43514c;
  font-size: var(--fs-sm);
  font-weight: 700;
}

.input-tip {
  margin: 4px 0 12px;
  color: var(--muted);
  font-weight: 500;
}

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid #cdd7d0;
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 8px 10px;
}

textarea {
  resize: vertical;
}

.date-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.yao-editor {
  display: grid;
  gap: 10px;
  margin: 18px 0;
}

.yao-row {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 48px;
}

.yao-options {
  min-width: 0;
}

.yao-select,
.actions button {
  border: 1px solid #c9d4cd;
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  min-height: 40px;
}

.yao-select {
  width: 100%;
  cursor: pointer;
}

.yao-select:focus {
  outline: 2px solid rgba(31, 111, 91, 0.18);
  border-color: var(--green);
}

.actions button {
  cursor: pointer;
}

.yao-select:hover {
  border-color: var(--green);
  background: #eaf4ee;
  color: #114b3a;
}

.actions {
  display: flex;
  gap: 10px;
}

.actions button {
  flex: 1;
  background: var(--green);
  color: #fff;
  border-color: var(--green);
  font-weight: 800;
}

.output-panel {
  min-height: 620px;
}

.output-top {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.output-top > div:first-child {
  min-width: 0;
}

.output-top h1 {
  max-width: 100%;
  font-size: clamp(29px, 4.3vw, 58px);
  line-height: 1.18;
  white-space: nowrap;
}

.mini-hex {
  width: clamp(68px, 14vw, 88px);
  display: flex;
  flex-direction: column-reverse;
  gap: 7px;
  flex: 0 0 auto;
}

.mini-hex i {
  height: 7px;
}

.reading {
  width: 100%;
  max-width: 920px;
  margin: 20px auto 0;
  padding-top: 18px;
  overflow-x: auto;
  font-size: var(--fs-base);
  line-height: 1.86;
  word-break: break-word;
}

.reading.empty {
  color: var(--muted);
}

.reading h3 {
  margin: 24px 0 10px;
  font-size: var(--fs-lg);
}

.reading h3:first-child {
  margin-top: 0;
}

.reading p {
  margin: 8px 0;
  max-width: 72em;
}

.reading ul,
.reading ol {
  max-width: 72em;
}

.ai-notice {
  margin: 0 0 16px;
  padding: 10px 12px;
  border: 1px solid #d7e2da;
  border-radius: 8px;
  background: #f4f8f5;
  color: #40514a;
  font-size: var(--fs-sm);
}

.adjust-list,
.avoid-list {
  margin: 8px 0 18px;
  padding-left: 20px;
}

.adjust-list li + li,
.avoid-list li + li {
  margin-top: 8px;
}

.reading table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 18px;
  font-size: var(--fs-sm);
}

.reading th,
.reading td {
  border-bottom: 1px solid var(--line);
  padding: 8px 6px;
  text-align: left;
  vertical-align: top;
}

.reading th {
  color: #40514a;
  background: #f4f7f4;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #eef4ef;
  color: #214d3f;
  font-size: var(--fs-sm);
  font-weight: 800;
}

.moving {
  color: var(--red);
  font-weight: 800;
}

.muted {
  background: #f4f6f1;
}

.reference-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.reference-grid article {
  padding: 18px;
}

.reference-grid h3 {
  margin: 0 0 8px;
  font-size: var(--fs-md);
}

@media (max-width: 980px) {
  .hero,
  .home-hero,
  .workspace,
  .home-strip,
  .course-map,
  .course-visuals,
  .image-reference-grid,
  .study-timeline,
  .lesson-layout,
  .form-grid,
  .yao-input-block,
  .learning-grid,
  .reference-grid {
    grid-template-columns: 1fr;
  }

  .input-panel {
    position: static;
  }

  .lesson-nav {
    position: static;
  }
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .brand small {
    max-width: 100%;
  }

  .topnav {
    width: 100%;
    justify-content: space-between;
  }

  .topnav a {
    flex: 1;
    padding: 8px 4px;
    text-align: center;
  }

  .topbar h1 {
    font-size: var(--fs-md);
  }

  .hero {
    min-height: auto;
  }

  .hero-art {
    min-height: 280px;
  }

  .bagua-image {
    width: min(78vw, 300px);
  }

  .hero-copy h2 {
    font-size: var(--fs-xl);
  }

  .home-hero .hero-copy h1,
  .page-title h1,
  .section-head h1,
  .lesson-article h1 {
    font-size: clamp(29px, 7vw, 36px);
  }

  .home-main,
  .content-main,
  .cast-main,
  .result-main {
    padding-left: 14px;
    padding-right: 14px;
  }

  .cast-panel,
  .lesson-article,
  .result-panel {
    padding: 18px;
  }

  .date-grid {
    grid-template-columns: 1fr;
  }

  .yao-symbol-grid,
  .lesson-gallery,
  .plate-visual > div {
    grid-template-columns: 1fr;
  }

  .yao-row {
    grid-template-columns: 42px 1fr;
  }

  .output-top {
    gap: 12px;
    align-items: flex-start;
  }

  .output-top h1 {
    font-size: clamp(27px, 7.1vw, 40px);
  }

  .reading table {
    min-width: 720px;
  }

  .plate-meta {
    grid-template-columns: 98px 1fr;
  }

  .reading {
    margin-top: 16px;
    font-size: var(--fs-base);
    line-height: 1.8;
  }
}

@media (max-width: 420px) {
  .coin-compare-grid {
    grid-template-columns: 1fr;
  }
}